Add GitHub Actions workflow for webhook notifications (#24)

Author: Radekyspec

.github/workflows/eo-dev-build.yml

@@ -0,0 +1,31 @@
+name: Notify Tencent Pages Webhook on server changes
+
+on:
+    push:
+        branches:
+            - dev
+        paths:
+            - "src/server/**"
+
+jobs:
+    notify:
+        name: Send webhook POST
+        runs-on: ubuntu-latest
+        steps:
+            - name: Send webhook POST to EO Pages
+              env:
+                  WEBHOOK_URL: ${{ secrets.EO_PAGES_WEBHOOK }}
+              run: |
+                  set -e
+                  echo "::add-mask::${WEBHOOK_URL}"
+
+                  payload='{"ref":"'"$GITHUB_REF"'","repository":"'"$GITHUB_REPOSITORY"'","pusher":"'"$GITHUB_ACTOR"'"}'
+
+                  status=$(curl -s -o /dev/null -w "%{http_code}" -X POST -H "Content-Type: application/json" -d "$payload" "$WEBHOOK_URL")
+
+                  if [ "$status" -ge 200 ] && [ "$status" -lt 300 ]; then
+                    echo "Webhook POST succeeded (status $status)"
+                  else
+                    echo "Webhook POST failed with status $status"
+                    exit 1
+                  fi